Loose-leaf binder.



E. W. ECKELMEYER.

LOOSE LEAF BINDER.

APPLICATION FILED MAY 25. |914.

1,150,750, Patented Aug. 17, 1915.

2 SHEETS-SHEET I.

F. W. ECKELMEYER.

LOOSE LEAF BINDER.

APPLICATION FILED M'Av25.1914.

Patented Aug. 17, 1915.

' 2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH Co., WASHINGTON. D. CY

@NEFF AVFES FYFNT @FFliQFQ FREDERICK W. ECKELMEYER, F PHILADELPHIA, PENNSYLVANIA, Z-iSSIlGrNOlt TO WILLIAM MANN CGIVIIANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

LOOSE-LEAF BINDER.

Application filed May 25, 1914.

T0 all whom it may concern Be it known that I, Fannnnrck W. EGKEL- Mnrn, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Loose-Leaf Binders, of which the following is a specilication.

lts/ly invention relates to certain improvements in loose leaf binders of the type fully illustrated in the patent granted to Joseph O. Decker-t, on the 29th day of March 1904i-, No. 756,159.

The object of the present invention is to construct the binder so that it can be extended to a greater' distance than the binders heretofore manufactured, in order to increase the number of leaves contained within the binder, yet it can be reduced to substantially the saine size as the binder of which it is an improvement. Vhen the jaws are extended they are rigidly held to the back and the telescopic rods have sufficient overlap to prevent them pulling out due to the weight of the leaves.

In the accompanying drawings z-Figure l, is a perspective view of the back of the binder; Fig. 2, is a plan View, looking at the interior of the binder with the leaves and the back removed; Fig. 3, is a side view; Fig. 4f, is a longitudinal sectional view on the line a-a, Fig. 2; Fig. 5, is an end view; Fig. G, is a transverse sectional view on the line b-b Fig. 2' Fi 7 is a transverse sectional view on the line c-c, Fig. 2; and Fig. 8, is a similar sectional view as Fig. 7 with the jaws extended to the full open position.

Referring to the drawings, 1 is the back of the book.

2, 2 are the adjustable jaws between which the leaves are clamped. rlhese jaws, in the present instance, have lugs 3 spaced a given distance apart and pivot pins 4f extend through the several lugs. The sides 5 of the book are pivotally connected to the jaws by these rods, as shown in Fig. 1. Extending from one jaw to another is a series of telescopic rods 6 made in two sections 7 and S. The sections S extend within the tubular section 7 and these sections are alternately arranged in the binder so that some of the tubular sections 7 are attached to one aw 2, while the others are attachedV to the other jaw 2.

Specification of Letters latent.

Patented Aug. 17, 1915.

serial No. 840,860.

Instead of fastening the two sections of the rods 6 to the lugs by separate pins, the lugs 3 are made hollow to a point past the pivot pins 4 and. the sections 7 and 8 of the rods extend into these lugs and are held by the pivot pins 4, as shown in Fig. 6, firmly securing these sections to the jaws. By this construction the jaws can be opened to a greater extent than heretofore and, when full open, the sections of the rods will have suliicient overlap, Fig. 8, to hold thein rigidly in position. The jaws are moved toward and from each other by a screw 9, adapted to suitable bearings 10 and 11 at each end of the binder. One end of this screw has right hand threads and the other has left hand threads.

12 and 13 are two slides. The slide 12 has a nut 14 engaging the threaded portion of the screw 9 at one end thereof and the slide 13 has a nut 15 adapted to the threads at the other end of the screw 9, so that, as the screw is turned in one direction the slides will move toward each other and when the screw is turned in the opposite direction the slides will be moved away from each other.

On the jaws 2, 2 are inclined rails 16 at each end of each jaw and each slide 12 and 13 is slotted to receive the rails 16. 'Fliese rails are set at such an angle that when the screw 9 is turned in one direction, the longitudinal movement of the slides will cause a lateral i'nov nient outward of the jaws and when the screw is reversed the jaws will have an inward movement. ny suitable means may be provided for turning the screw and this means may be in the form of a key adapted to a squared end of the rod, or the key may be adapted to a lock or hub attached to the screw. rllhis device forms no part of the present invention.

The bearings 10 and 11 are rigidly secured to the back 1 and secured to each bearing is a plate 17 which overlaps the portions 2 of the jaws to which the inclined rails are secured. The plates extend under flanges 18 on the parts 2a so as to rigidly support the clamps 2 when they are extended and considerably overhang the edges of the back 1.

19, 19 are filler plates bearing against the edges of the flanges and 2O is a cover plate which extends over the fla-nge 18 and the filler plate and has a depending flange 21 which conceals these parts. Screws 22 confine the plates 20, 19 and 17 to the bearings l0 and 11 respectively.

The aws 2 have the usual end anges 2b, which extend over part of the mechanism above described and on each end of the back 1 is a flange 121, which overlaps the flanges 2b of the jaws 2, so that, when the binder is in the closed position, the mechanism is entirely inclosed by the flanges, but when the binder is full open the ends oi the flanges 1L will still overlap the flanges 2b, giving a neat finish to the binder and adding stiffness thereto. One of the flanges 1u also acts as a support for the outer portion of the center of the lock, when a lock is used.

By the above construction it will be seen that I am enabled to make a binder which can be opened to a greater extent than binders of the same type heretofore made, having the same rigidity when opened as when closed, and, when closed, the jaws will be as close together as the ordinary binder of the same type.

By making the binder as above described, I provide the moving elements with suflicient overlap, when the binder is full open, to withstand the strains, and prevent breaking of the connection between the leaves and the back.

I claim 1. The combination of a binder, of a back; two jaws arranged to slide on the back; a longitudinal screw mounted in the bearings at each end of the back; means controlled by the screw for opening and closing the back; a plate rigidly secured to each bearing and extending laterally over the base of the jaws, each jaw having an inturned flange; a plate rigidly secured to each hearing and extending between the base of the jaws and the flange so that the plate acts asa guide for the jaws and holds them rigid when extended; and means, on the jaws, for retaining the leaves of the book to the hack.

2. The combination in a back, of two jaws arranged to slide thereon; a longitudinal screw having right and left hand threads; bearings at each end of the back 'in which the screw is mounted; slides independent of the back and of the jaws and having nuts through which the screw extends, said slides having angular guideways; rails secured to the jaws and set at an angle corresponding to the angle of the guideways so that, when the screw is turned in one direction, the jaws will be opened and when the screw is turned in the opposite direction the jaws will be closed; guides" at each end of the binder consisting of a plate secured rigidly to the back and extending over the base of the jaws, each jaw having a flange at each end extending over the plate; a cover plate; a filler plate located between the guide plate and the cover plate, the said filler plate and cover plate being secured to the back; and means, on the jaws, for engaging the leaves to `hold them between the jaws.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

FREDERICK W. ECKELMEYER. l/Vitnesses:

Jos. H. KLEIN, WM. A. BARR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. C. 

